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= - 6x + 6y
= - 6(x - y)
2. -3(2x-5)+2(-x+4) = - 6x + 15 - 2x + 8
= ( - 6x - 2x) + (15 + 8)
= - 8x + 23
3. (2x-1) (-3x+4) = - 6x² + 6x + 3x - 4
= -6x² + 9x - 4
4.2x+1/3 + 3x-2/5 = (2x + 3x) + (1/3 - 2/5)
= 5x - 1/15
= 4x-10x+5y+y
= -6x + 6y
2. -3(2x-5)+2(-x+4)
= (-6x + 15) + (-2x + 8)
= -6x-2x + 15+8
= -8x + 23
3. (2x-1) (-3x+4)
= -6x² + 8x + 3x - 4
= -6x² +11x - 4
4. 2x+1/3 + 3x-2/5
= 2x + 3x + (1/3 - 2/5)
= 5x - 1/15
semoga bermanfaat :)